I think that the piece I heard made reference to the early nineties spike being to do with the popularity of hip hop. At this point Gansta Rap started to take over the US charts, but obviously the seeds had already been sown with people like Bambata a decade and half earlier and the likes of...
I heard this being proposed on the radio last week. My immediate reaction was to wonder why they have taken their sample from just the American chart and why they think that singles charts can give the whole picture. This ignores underground music scenes, it ignores clubs, live music and...